Error code

OBD2 P0168

OBD2P0168
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Fuel Temperature Too High.

Severity

moderateCan drive but should address the issue soon to prevent potential engine damage.

Summary

P0168 indicates that the fuel temperature is too high. This issue typically involves the fuel composition/temperature sensor and its wiring.

Symptoms

  • Stored trouble code and illuminated warning light
  • Other fuel composition-related codes may be present

Common Causes

  • Damaged, shorted, disconnected, burnt, or corroded wiring and/or connectors
  • Defective fuel composition/temperature sensor
  • Excessively contaminated fuel

Diagnosis

  1. Record all fault codes and freeze frame data.
  2. Check for poor fuel quality as a cause.
  3. Inspect wiring for any visible damage.
  4. Perform electrical tests on wiring and sensor if necessary.

Fixes

  • Replace damaged wiring or connectors
  • Replace defective fuel composition/temperature sensor

FAQ

Can I drive with P0168?

Yes, but it's recommended to address the issue soon as prolonged driving may cause engine damage.

What tools do I need for diagnosis?

An infrared thermometer and an oscilloscope are helpful. A digital multimeter is also useful.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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